Fixed|Hexen|SFX: Cough sound playback on Player vs PoisonCloud collision

If god mode is active then the cough sound should not be played.
Seemingly the result of a refactoring oversight back in 2008.
Refactor|InFine: Cleaned up InFine script system

In preparation for debugging the outstanding backward compatibility
issues (e.g., NoSkip handling).
Refactor|InFine: Cleaned up InFine FinaleInterpreter

Learning the mechanics of the interpreter in the process.
Merge branch 'master' into common-episode-definition